Home / 326.98-490.46-80.19

Finding the Fourth Proportional to 326.98, 490.46 and 80.19

Calculator

Solution

The fourth proportional to 326.98, 490.46 and 80.19 is: 120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.98 : 490.46 = 80.19 : x
  2. Step 2: Convert to fraction form
    326.98/490.46 = 80.19/x
  3. Step 3: Cross multiply
    326.98x = 490.46 × 80.19
  4. Step 4: Simplify right side
    326.98x = 39,328.49
  5. Step 5: Solve for x
    x = 39,328.49/326.98
  6. Step 6: Final answer
    x = 120.28

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.